Revert "updating contrib submodule reference to dimagi fork"
Revert "updating contrib submodule reference to dimagi fork"

This reverts commit a3769871c32e0e2aaf74a8a1107ce5118921d138.

ehealthafrica-ci/rapidsms,rapidsms/rapidsms-core-dev,ehealthafrica-ci/rapidsms,dimagi/rapidsms,dimagi/rapidsms,caktus/rapidsms,caktus/rapidsms,dimagi/rapidsms-core-dev,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,rapidsms/rapidsms-core-dev,ken-muturi/rapidsms,dimagi/rapidsms-core-dev,peterayeni/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,ken-muturi/rapidsms,caktus/rapidsms,unicefuganda/edtrac,unicefuganda/edtrac,peterayeni/rapidsms,lsgunth/rapidsms,unicefuganda/edtrac,lsgunth/rapidsms,catalpainternational/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,catalpainternational/rapidsms,ken-muturi/rapidsms,eHealthAfrica/rapidsms,catalpainternational/rapidsms